Energy method in the partial Fourier space and application to stability problems in the half space.
Energy method in the partial Fourier space and application to stability problems in the half space.
复制标题
部分傅里叶空间中的能量方法及其在半空间稳定性问题中的应用。
DOI:
10.1016/j.jde.2010.10.003
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
S. Kawashima
中科院分区:
文献类型:
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作者:
Y. Ueda;T. Nakamura;S. Kawashima
The energy method in the Fourier space is useful in deriving the decay estimates for problems in the whole space Rn. In this paper, we study half space problems in R+n=R+×Rn−1and develop the energy method in the partial Fourier space obtained by taking the Fourier transform with respect to the tangential variable x′∈Rn−1. For the variable x1∈R+in the normal direction, we use L2space or weighted L2space. We apply this energy method to the half space problem for damped wave equations with a nonlinear convection term and prove the asymptotic stability of planar stationary waves by showing a sharp convergence rate for t→∞. The result obtained in this paper is a refinement of the previous one in Ueda et al. (2008) [13].